North winds, a big chill, and clear skies triggered another night of migration over the mid-Atlantic last night. Here’s the radar from 7:00pm last night through 5:00am this morning. Frames are every 1/2 hour. Click on the thumbnail to view the full-sized animation. After several nights of heavy migration, last night was a bit smaller […]

North winds and clear skies made for another fine night of migration. Here’s the radar from 7:00pm last night through 5:00am this morning. Frames are every 1/2 hour. Click on the thumbnail to view the full-sized animation. North winds and clear skies across the region last night mean that many new birds will have arrived […]

…this time on more northerly winds. Here’s the radar from 7:00pm last night through 5:00am this morning. Frames are every 1/2 hour. Click on the thumbnail to view the full-sized animation. North winds turned to NNE overnight last night, sending a large pulse of new birds into the region from NY and New England. Inland […]

And on strong westerly winds! Here’s the radar from 7:00pm last night through 5:00am this morning. Frames are every 1/2 hour. Click on the thumbnail to view the full-sized animation. As is typical after the passage of a strong cold front, high pressure built in behind the front causing strong WNW winds from the Great […]